JP4150682B2 - Reservoir tank connection hose holding structure - Google Patents

Description

  The present invention relates to a connecting hose holding structure for a reservoir tank, and more specifically, a connecting hose for connecting a reservoir tank storing hydraulic fluid supplied to hydraulic equipment such as a hydraulic master cylinder for a vehicle and a hydraulic master cylinder. This relates to the holding structure.

In a reservoir that supplies hydraulic fluid to a vehicle hydraulic master cylinder, a reservoir tank that stores hydraulic fluid and a reservoir joint that serves as a master cylinder connecting portion are formed separately. They are connected by a rubber connecting hose having elasticity (for example, see Patent Document 1). Such a reservoir is loaded with a reservoir tank and a connecting hose (including a reservoir joint) connected in advance, and the reservoir tank is attached to a predetermined position of the vehicle body when the vehicle is assembled, and the reservoir joint is connected to the hydraulic master cylinder joint. It is attached to the connecting boss.
Japanese Patent Laid-Open No. 2003-40098

  However, since the connecting hose has elasticity, the connecting hose is swayed when transporting the reservoir tank connected to the connecting hose or fixing the reservoir tank to the vehicle body at the time of assembling. For this reason, in the past, the connecting hose was fixed with a rubber band or the like with the connecting hose bent toward the reservoir tank, but not only the workability was poor, but the cost of consumables such as a rubber band was also a problem. .

  Therefore, the present invention can hold the connecting hose connected to the reservoir tank integrally with the reservoir tank without using a rubber band or the like, and the connecting hose may be disturbed during transportation or attachment to the vehicle body. It is an object of the present invention to provide a connecting hose holding structure for a reservoir tank that does not become a problem.

In order to achieve the above object, a connecting hose holding structure for a reservoir tank according to the present invention is a connecting hose holding structure for a reservoir tank that connects a liquid storage chamber and a hydraulic device via an elastic connecting hose. molding the outside, hydraulic equipment connection end of the connecting hose, the locking portion engaged by an elastic restoring force with respect to a bending the connection hose is provided, the locking portion from the reservoir tank molding die It is also characterized in that it also serves as an abutting portion for a push pin when releasing a later reservoir tank . Also, hydraulic equipment connection end of the connecting hose may be one hose band attached to hydraulic equipment connection end of the connecting hose is engaged with the locking portion.

  According to the connection hose holding structure of the reservoir tank of the present invention, the connection hose can be integrated with the reservoir tank without using a rubber band or the like. The cost required for consumables such as rubber bands can be reduced. The locking portion provided in the reservoir tank can be provided with a dedicated locking portion, but the reservoir tank shape can be simplified by using the abutment portion of the release pin as well. The connection end of the connecting hose is connected to the connection end by using a hose band attached to the connection end or an appropriate protrusion formed on the reservoir joint. There is no need to newly provide a locking member.

  1 to 4 show an embodiment in which the connecting hose holding structure for a reservoir tank according to the present invention is applied to a reservoir for a tandem hydraulic master cylinder in an automobile brake device. FIG. 1 shows a reservoir tank and a connecting hose. FIG. 2 is a plan view showing a state in which the connecting hose is bent and the hydraulic device connection side end is locked to the reservoir tank, FIG. 3 is a front view, and FIG. It is the IV-IV sectional view taken on the line of FIG.

  First, the reservoir tank 1 includes a liquid storage chamber (tank main body) 1a divided into upper and lower parts, a pair of vehicle body mounting pieces 1b projecting from both side walls of the liquid storage chamber 1a, and a rear of the liquid storage chamber 1a. It has two hose connection connectors 1c, 1c protruding from the bottom of the wall and a cap 1d attached to the upper opening, and is attached to a predetermined position of the vehicle body using the vehicle body attachment piece 1b.

  The reservoir joint 2 has a pair of connecting boss portions 2b protruding from the lower surface of the base portion 2a, and a pair of hose connecting boss portions 2c protruding from the upper surface of the base portion 2a toward the reservoir tank 1. The coupling boss portion 2b is fitted into a pair of joint coupling boss portions provided in the hydraulic master cylinder, thereby being mounted on the upper portion of the hydraulic master cylinder.

  The connection hose 3 is made of a material having elasticity such as rubber, and the hose connection connector 1c of the reservoir tank 1 is inserted into one end thereof, and the hose connection boss portion 2c of the reservoir joint 2 is inserted into the other end thereof. In the state, it is fastened and fixed by the hose band 4. As a result, the liquid storage chamber 1 a of the reservoir tank 1 and the hydraulic pressure chamber of the hydraulic master cylinder are in communication with each other via the connection hose 3 and the reservoir joint 2. The connecting hose 3 is usually set to have the shortest length in the positional relationship between the reservoir tank 1 attached to the vehicle body and the reservoir joint 2 attached to the hydraulic master cylinder.

  Thus, the liquid of the connecting hose 3 is provided on the outer surface of the bottom of the side wall of the liquid storage chamber 1a in the reservoir tank 1 that connects the liquid storage chamber 1a and the hydraulic master cylinder, which is a hydraulic device, via the connecting hose 3 having elasticity. A concave locking portion 5 for locking the pressure master cylinder connection side end is provided. The concave locking portion 5 is for locking the knob 4 a of the hose band 4 attached to the end of the connecting hose 3 on the reservoir joint 2 side by using the elastic restoring force of the connecting hose 3. Then, the connecting hose 3 is bent in the horizontal direction so as to turn on the opposite side of the position where the concave locking portion 5 is formed, and the knob 4a of the hose band 4 is concave while passing below the bottom of the liquid storage chamber 1a. By inserting into the locking part 5, the knob 4 a is held in a state of being locked to the concave locking part 5 by the elastic restoring force of the connecting hose 3.

  As a result, the reservoir tank 1, the connecting hose 3 and the reservoir joint 2 are integrated together, so that the connecting hose 3 will not be disturbed during transportation or attachment to the vehicle body. The mounting workability is improved, and consumables such as a rubber band are not required, so that the cost can be reduced.

  5 to 7 show another embodiment of the present invention. FIG. 5 is a plan view showing a state in which the connecting hose is locked to the reservoir tank, FIG. 6 is a rear view, and FIG. It is explanatory drawing which shows the relationship between a part and the release pin. In the following description, the same reference numerals are given to the same components as those shown in the embodiment, and the detailed description is omitted.

  The present embodiment shows an example in which a convex locking portion 6 having a triangular shape in plan view is provided on one rear edge 1e of a vehicle body mounting piece 1b provided in the reservoir tank 1. This convex locking part 6 is engaged with the knob 4a of the hose band 4 by the elastic restoring force of the connecting hose 3 that is bent in the horizontal direction so as to turn the opposite side of the position where the convex locking part 6 is formed. As shown in FIG. 7, the push pin 7 has a shape that can hold the stopped state and is used to release the molded lower half of the reservoir tank from the mold that molds the lower half of the reservoir tank 1. It is formed in a shape that also serves as an abutting part.

  Also in this embodiment, the connecting hose 3 and the reservoir joint 2 are bent by locking the knob 4a of the hose band 4 attached to the end of the reservoir joint 2 to the convex locking portion 6 by bending the connecting hose 3. Can be held in the reservoir tank 1, and the workability can be improved and the cost can be reduced as in the above-described embodiment. Further, by serving also as the abutting portion of the push pin 7, the shape of the reservoir tank can be simplified.

  In both the embodiments, the reservoir tank in which two connecting hoses are connected is illustrated, but the same applies to the case where there is only one connecting hose. Further, the locking to the locking portion provided in the reservoir tank is not limited to the hose band, but may be a locking of the connecting hose itself or a locking of the reservoir joint. In addition, the bending direction of the connecting hose can be bent in any direction as long as it does not interfere with the mounting work, etc., and the shape of the locking part is also the bending direction of the connecting hose, i.e., the connecting hose is bent. Can be set as appropriate according to the direction in which the elastic restoring force is generated.

It is a top view which shows the connection state of the reservoir tank which shows one example of this invention, a connection hose, and a reservoir joint. It is a top view which shows the state which bent the connection hose similarly and latched the hydraulic equipment connection side edge part to the reservoir tank. It is a front view which shows the state which bent the connection hose similarly and latched the hydraulic equipment connection side edge part to the reservoir tank. It is the IV-IV sectional view taken on the line of FIG. It is a top view which shows the state which locked the connection hose which shows the other example of this invention to the reservoir tank. It is a rear view which shows the state which similarly connected the connection hose to the reservoir tank. It is explanatory drawing which similarly shows the relationship between a latching | locking part and the release pin.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Reservoir tank, 1a ... Liquid storage chamber, 1b ... Body attachment piece, 1c ... Hose connection connector, 1d ... Cap, 1e ... Rear edge, 2 ... Reservoir joint, 2a ... Base part, 2b ... Connecting boss part, 2c ... Hose connection boss part, 3 ... Connection hose, 4 ... Hose band, 4a ... Knob part, 5 ... Concave engagement part, 6 ... Convex engagement part, 7 ... Push pin

Claims (2)

In a connecting hose holding structure of a reservoir tank that connects a liquid storage chamber and a hydraulic device via an elastic connecting hose, the hydraulic device connecting side end of the connecting hose is connected to the outside of the reservoir tank, the connecting hose A locking portion that is locked by an elastic restoring force when bent is provided , and the locking portion also serves as an abutting portion of the push pin when releasing the molded reservoir tank from the reservoir tank molding die connection hose holding structure of the reservoir tank, characterized in that there. 2. The reservoir tank according to claim 1, wherein a hose band attached to a hydraulic device connection side end portion of the connection hose is engaged with the engagement portion at the hydraulic device connection side end portion of the connection hose . Connecting hose holding structure.

Images